Quantization of Nambu-Goto Action in Four Dimensions
arXiv:1005.2726
Abstract
Recently, a new quantization method for gauge theories was proposed, in which no gauge fixing is required but the constraints are kept. Here we successfully applied this formalism to Nambu-Goto action in any dimensions. The result of our theoretical calculation have shown striking agreement with the spectrum of the light-quark mesons.
19 pages, 2 figures, appendix B added to answer common question, several paragraphs added for easier understainding